<?php
/* QQ:34734852
 * 业务联系：小鱼
 */
class RequestPhone{
   public static function isMobile(){ 
     if ( $_SESSION['phone'] ) {
		 return true;
	 }
	  // 如果有HTTP_X_WAP_PROFILE则一定是移动设备
	  if (isset ($_SERVER['HTTP_X_WAP_PROFILE'])){
		  return true;
	  } 
	  // 如果via信息含有wap则一定是移动设备,部分服务商会屏蔽该信息
	  if (isset ($_SERVER['HTTP_VIA'])){ 
		  // 找不到为flase,否则为true
		  return stristr($_SERVER['HTTP_VIA'], "wap") ? true : false;
	  } 
	  // 脑残法，判断手机发送的客户端标志,兼容性有待提高
	  if (isset ($_SERVER['HTTP_USER_AGENT'])){
		  $clientkeywords = array ('nokia', 'sony','ericsson','mot','samsung','htc','sgh','lg','sharp','sie-','philips','panasonic','alcatel','lenovo','iphone','ipod', 'blackberry', 'meizu','android', 'netfront','symbian','ucweb','windowsce', 'palm','operamini','operamobi','openwave','nexusone','cldc','midp','wap','mobile'); 
		  // 从HTTP_USER_AGENT中查找手机浏览器的关键字
		  if (preg_match("/(" . implode('|', $clientkeywords) . ")/i", strtolower($_SERVER['HTTP_USER_AGENT']))){
			  return true;
		  } 
	  } 
	  // 协议法，因为有可能不准确，放到最后判断
	  if (isset ($_SERVER['HTTP_ACCEPT'])) { 
		  // 如果只支持wml并且不支持html那一定是移动设备
		  // 如果支持wml和html但是wml在html之前则是移动设备
		  if ((strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') !== false) && (strpos($_SERVER['HTTP_ACCEPT'], 'text/html') === false || (strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') < strpos($_SERVER['HTTP_ACCEPT'], 'text/html')))){
			  return true;
		  } 
	  } 
	  return false;
	}
}